Miniature guns are novelty custom, unique, and sometime downright crude! Common construction materials often include pill bottles or pens. Show us your work!
If my memory serves me, I believe a few years ago, I began a thread with one of my primitive semi-auto combustion designs (a freaking HUGE one). Someone made a test rig to see if recoil would be sufficient, and that video looks shockingly similar to the one someone made....
I wonder if theres a way to make it recoil back and then SLOWLY return to the foward position.........
if so, i think my next cannon will be something that fires taters and has recoil absorbtion like that...... along with wheels and a trailer hitch......
I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.